Portion of a golf club head for a putter



FIG. 1 is a top perspective view of a portion of a golf club head for a putter showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a toe end view thereof; and,

FIG. 6 is a heel end view thereof.

The broken lines immediately adjacent to the shaded region form unclaimed boundaries of the design. The broken line showing of the rectangular region and the remainder of the golf club head is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a portion of a golf club head for a putter, as shown and described. 